A nasty, ugly little fucker...

Rico's friend Kelley forwards this:

I'm a sucker for 'lists': Ten Things You Never About Steve Jobs, Fifteen Creepy Deserted Buildings, etc. This morning it was Ten Animals you Never Knew Existed. Nearly upchucked my morning coffee with this little bastard. Looked it up. The article says that they're about three centimeters full grown, but they get bigger.
Glaucus atlanticus (common names include the sea swallow, blue angel, blue glaucus, blue dragon, blue sea slug, and blue ocean slug) is a species of small, blue sea slug, a pelagic aeolid nudibranch, a shell-less gastropod mollusk in the family Glaucidae.
These sea slugs are pelagic: they float upside down on the surface tension of the water, where they are carried along by the winds and ocean currents. Glaucus atlanticus is camouflaged: the blue side of their body faces upwards, blending in with the blue of the water. The silver/grey side of the sea slugs faces downwards, blending in with the silvery surface of the sea.
Glaucus atlanticus feeds on other pelagic creatures, including the venomous cnidarian, the Portuguese Man o' War. This sea slug stores stinging nematocysts from the cnidarian within its own tissues as defense against predation. Humans handling the slug may receive a very painful and potentially dangerous sting.
At maturity, Glaucus atlanticus can be up to three centimeters in length. It is silvery grey on its dorsal side and dark and pale blue ventrally. It has dark blue stripes on its head. It has a tapering body which is flattened, and has six appendages which branch out into rayed, finger-like cerata. The radula of this species bears serrated teeth.
With the aid of a gas-filled sac in its stomach, Glaucus atlanticus floats at the surface. Due to the location of the gas sac, this species floats upside down. The upper surface is actually the foot (the underside in other slugs and snails), and this has either a blue or blue-white coloration. The true dorsal surface (carried downwards in Glaucus atlanticus) is completely silver-grey. This coloration is an example of counter shading, which helps protect it from predators that might attack from below and from above. The blue coloration is also thought to reflect harmful UV sunlight.

Rico says the ocean is full of weird shit...